1 ; An integer truncation to i1 should be done with an and instruction to make
2 ; sure only the LSBit survives. Test that this is the case both for a returned
3 ; value and as the operand of a branch.
4 ; RUN: llc < %s -march=x86 | FileCheck %s
6 define zeroext i1 @test1(i32 %X) nounwind {
7 %Y = trunc i32 %X to i1
11 ; CHECK: andl $1, %eax
13 define i1 @test2(i32 %val, i32 %mask) nounwind {
15 %shifted = ashr i32 %val, %mask
16 %anded = and i32 %shifted, 1
17 %trunced = trunc i32 %anded to i1
18 br i1 %trunced, label %ret_true, label %ret_false
27 define i32 @test3(i8* %ptr) nounwind {
29 %tmp = trunc i8 %val to i1
30 br i1 %tmp, label %cond_true, label %cond_false
37 ; CHECK: testb $1, (%eax)
39 define i32 @test4(i8* %ptr) nounwind {
40 %tmp = ptrtoint i8* %ptr to i1
41 br i1 %tmp, label %cond_true, label %cond_false
48 ; CHECK: testb $1, 4(%esp)
50 define i32 @test5(double %d) nounwind {
51 %tmp = fptosi double %d to i1
52 br i1 %tmp, label %cond_true, label %cond_false